Add echo command.

Prints messages using mutt_message().  Sets OPTFORCEREFRESH to allow
updates in the middle of a macro.

Calls mutt_sleep(0) to pause for $sleep_time seconds after displaying
the message.

doc/manual.xml.head

@@ -6507,6 +6507,36 @@ macro pager \cb |urlview\n
 
 </sect1>
 
+<sect1 id="echo">
+<title>Echoing Text</title>
+
+<para>
+Usage:
+</para>
+
+<cmdsynopsis>
+<command>echo</command>
+<arg choice="plain">
+<replaceable class="parameter">message</replaceable>
+</arg>
+</cmdsynopsis>
+
+<para>
+You can print messages to the message window using the "echo" command.
+This might be useful after a macro finishes executing.  After printing
+the message, echo will pause for the number of seconds specified by
+<link linkend="sleep-time">$sleep_time</link>.
+</para>
+
+<screen>
+echo "Sourcing muttrc file"
+
+unset confirmappend
+macro index ,a "&lt;save-message&gt;=archive&lt;enter&gt;&lt;enter-command&gt;echo 'Saved to archive'&lt;enter&gt;"
+</screen>
+
+</sect1>
+
 <sect1 id="misc-topics">
 <title>Miscellany</title>
 
@@ -9658,6 +9688,15 @@ The following are the commands understood by Mutt:
 </cmdsynopsis>
 </listitem>
 
+<listitem>
+<cmdsynopsis>
+<command><link linkend="echo">echo</link></command>
+<arg choice="plain">
+<replaceable class="parameter">message</replaceable>
+</arg>
+</cmdsynopsis>
+</listitem>
+
 <listitem>
 <cmdsynopsis>
 <command><link linkend="exec">exec</link></command>

init.c

@@ -692,6 +692,22 @@ static int parse_list (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
   return 0;
 }
 
+static int parse_echo (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
+{
+  if (!MoreArgs (s))
+  {
+    strfcpy (err->data, _("not enough arguments"), err->dsize);
+    return -1;
+  }
+  mutt_extract_token (buf, s, 0);
+  set_option (OPTFORCEREFRESH);
+  mutt_message ("%s", buf->data);
+  unset_option (OPTFORCEREFRESH);
+  mutt_sleep (0);
+
+  return 0;
+}
+
 static void _alternates_clean (void)
 {
   int i;

init.h

@@ -4101,6 +4101,7 @@ static int parse_lists (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_unlists (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_alias (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_unalias (BUFFER *, BUFFER *, unsigned long, BUFFER *);
+static int parse_echo (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_ignore (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_unignore (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_source (BUFFER *, BUFFER *, unsigned long, BUFFER *);
@@ -4149,6 +4150,7 @@ const struct command_t Commands[] = {
   { "color",		mutt_parse_color,	0 },
   { "uncolor",		mutt_parse_uncolor,	0 },
 #endif
+  { "echo",		parse_echo,		0 },
   { "exec",		mutt_parse_exec,	0 },
   { "fcc-hook",		mutt_parse_hook,	MUTT_FCCHOOK },
   { "fcc-save-hook",	mutt_parse_hook,	MUTT_FCCHOOK | MUTT_SAVEHOOK },